This pepper steak stir fry will be your new go-to meal! It's full of lots of flavor with ginger, garlic and Serrano chili. Even better, the beef cooks in minutes!
Heat 2 tablespoons of sesame oil in a wok or cast iron skillet over medium-high heat. Add the flank steak and cook until well browned, stirring often (about 5 - 6 minutes).